Start >> Analog Window >> Bottom

NI-DAQmx C Properties

Start >> Analog Window >> Bottom

Data Type: float64
Description: Specifies the lower limit of the window. Specify this value in the units of the measurement or generation.

You can get/set/reset this property using:
  DAQmxGetAnlgWinStartTrigBtm
  DAQmxSetAnlgWinStartTrigBtm
  DAQmxResetAnlgWinStartTrigBtm